When a rotor pump becomes louder after running, first determine whether it is caused by vibration in the pump body or by the rotor running.
I. Pump body vibration caused by
should check whether the inlet flange is open and whether the inlet pipeline is blocked, and, after ascertaining that there are no problems at the inlet end, check whether the motor speed exceeds the design speed.
II. caused by rotor operation
Rotor operation caused by the need to disassemble the rotor end of the pump casing, check whether there are large particles stuck in the pump cavity, while checking whether the rotor has a large wear, rubber rotor wear is too large can not produce self-priming, thus leading to loud sound.
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